Now, 23-year-old Grande's manager has spoken out for the first time on the suspected terror attack, saying he is "heartbroken".

Scooter Braun released a statement, saying: "Tonight, our hearts are broken. Words cannot express our sorrow for the victims and families harmed in this senseless attack.

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ARIANA GRANDE: Was performing at the Manchester Arena on Monday

Manchester bomb blast: Horrific aftermath as 22 people killed at Ariana Grande show

Greater Manchester Police have confirmed a terrorist attack has killed at least 22 at the MEN Arena as concertgoers were leaving an Ariana Grande show.

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Police Respond To An Incident At Manchester Arena

"We mourn the lives of children and loved ones taken by this cowardly act. We are thankful for the selfless service tonight of Manchester's first responders who rushed towards danger to help save lives.

"We ask all of you to hold the victims, their families and all those affected in your hearts and prayers."

Braun's post was shared with his 4 million Twitter followers and has been retweeted over 15,000 times.

Manchester attack: Celebs in display of solidarity with victims

Celebrities have taken to Twitter in a staunch display of solidarity with victims of the Manchester Arena attack

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MANAGER: Scooter Braun released a statement on Twitter

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'BROKEN': Ariana wrote this to her fans on Twitter

“From the bottom of my heart, I am so so sorry. I don't have words.”

Ariana Grande

It comes as Prime Minister Theresa May described is as an "appalling attack", while Labour's Jeremy Corbyn called it "horrendous".

Manchester City Council leader Sir Richard Leese said it was "hard to imagine" a worse night in the history of the city.

While Greater Manchester Police chief constable Ian Hopkins said: "We are currently treating this as a terrorist incident.

"This is clearly a concerning time for people but we are doing all we can to support those affected and gather information about what has happened."

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DEVASTATING: At least 22 have been killed in the suspected terror attack